Texas Instruments LM3940IMPX-3.3
- Part Number:
- LM3940IMPX-3.3
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3763942-LM3940IMPX-3.3
- Description:
- IC REG LDO 3.3V 1A SOT223
- ECAD Model:
-
- Datasheet:
- LM3940IMPX-3.3
Description
The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. It is ideally suited for systems containing both 5-V and 3.3-V logic, with prime power provided from a 5-V bus. As a true low dropout regulator, the LM3940 can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The TO-220 package allows for delivery of the full 1 A of load current without an additional heatsink in most applications. The surface mount DDPAK/TO-263 package minimizes board space and provides excellent power dissipation capability when soldered to a copper plane on the PC board.
Features
Input voltage range: 4.5 V to 5.5 V
Output voltage specified over temperature
Excellent load regulation
Specified 1-A output current
Requires only one external component
Built-in protection against excess temperature
Short-circuit protected
Applications
Laptop and desktop computers
Logic systems
The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. It is ideally suited for systems containing both 5-V and 3.3-V logic, with prime power provided from a 5-V bus. As a true low dropout regulator, the LM3940 can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The TO-220 package allows for delivery of the full 1 A of load current without an additional heatsink in most applications. The surface mount DDPAK/TO-263 package minimizes board space and provides excellent power dissipation capability when soldered to a copper plane on the PC board.
Features
Input voltage range: 4.5 V to 5.5 V
Output voltage specified over temperature
Excellent load regulation
Specified 1-A output current
Requires only one external component
Built-in protection against excess temperature
Short-circuit protected
Applications
Laptop and desktop computers
Logic systems
Texas Instruments LM3940IMPX-3.3 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM3940IMPX-3.3.
- Lifecycle StatusNRND (Last Updated: 6 days ago)
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / CaseTO-261-4, TO-261AA
- Number of Pins4
- Operating Temperature-40°C~125°C
- PackagingTape & Reel (TR)
- JESD-609 Codee0
- Part StatusNot For New Designs
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations4
- ECCN CodeEAR99
- Terminal FinishTin/Lead (Sn/Pb)
- SubcategoryOther Regulators
- Packing MethodTR
- TechnologyBIPOLAR
- Terminal PositionDUAL
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Number of Functions1
- Terminal Pitch2.3mm
- Base Part NumberLM3940
- Pin Count3
- Number of Outputs1
- Voltage - Input (Max)7.5V
- Output Voltage3.3V
- Output TypeFixed
- Max Output Current1A
- Output ConfigurationPositive
- Quiescent Current110μA
- Output Voltage 13.3V
- Number of Regulators1
- Min Input Voltage4.5V
- Protection FeaturesOver Temperature, Short Circuit
- Voltage Dropout (Max)0.2V @ 100mA
- Dropout Voltage310mV
- Dropout Voltage1-Nom0.31V
- Voltage Tolerance-Max5.2%
- Input Voltage Absolute-Max7.5V
- Height1.8mm
- Length6.5mm
- Width3.5mm
- Thickness1.6mm
- Radiation HardeningNo
- RoHS StatusNon-RoHS Compliant
- Lead FreeContains Lead
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